For future reference, here is something to keep in mind.

I just spent 30 minutes trying to figure out why one of my reports suddenly was only 4 inches wide instead of 11 (landscape report). After scurrying through backups that made no difference, I finally remembered that users can go to the printer (an HP 5SI) and change the paper size for the default tray. Someone had changed it to a legal size envelope, then did not bother to change back after use! Just remember it ain't always our fault.